FI953233A - Water-absorbent resin particles and their manufacture - Google Patents
Water-absorbent resin particles and their manufacture Download PDFInfo
- Publication number
- FI953233A FI953233A FI953233A FI953233A FI953233A FI 953233 A FI953233 A FI 953233A FI 953233 A FI953233 A FI 953233A FI 953233 A FI953233 A FI 953233A FI 953233 A FI953233 A FI 953233A
- Authority
- FI
- Finland
- Prior art keywords
- resin particles
- absorbent resin
- water
- acrylic acid
- less
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/12—Powdering or granulating
- C08J3/124—Treatment for improving the free-flowing characteristics
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
- A61L15/26—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/42—Use of materials characterised by their function or physical properties
- A61L15/60—Liquid-swellable gel-forming materials, e.g. super-absorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/26—Synthetic macromolecular compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/26—Synthetic macromolecular compounds
- B01J20/261—Synthetic macromolecular compounds obtained by reactions only involving carbon to carbon unsaturated bonds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/26—Synthetic macromolecular compounds
- B01J20/264—Synthetic macromolecular compounds derived from different types of monomers, e.g. linear or branched copolymers, block copolymers, graft copolymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/26—Synthetic macromolecular compounds
- B01J20/265—Synthetic macromolecular compounds modified or post-treated polymers
- B01J20/267—Cross-linked polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28002—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their physical properties
- B01J20/28004—Sorbent size or size distribution, e.g. particle size
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/2805—Sorbents inside a permeable or porous casing, e.g. inside a container, bag or membrane
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3202—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the carrier, support or substrate used for impregnation or coating
- B01J20/3206—Organic carriers, supports or substrates
- B01J20/3208—Polymeric carriers, supports or substrates
- B01J20/321—Polymeric carriers, supports or substrates consisting of a polymer obtained by reactions involving only carbon to carbon unsaturated bonds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
- B01J20/3242—Layers with a functional group, e.g. an affinity material, a ligand, a reactant or a complexing group
- B01J20/3268—Macromolecular compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
- B01J20/3287—Layers in the form of a liquid
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
- C08F8/42—Introducing metal atoms or metal-containing groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/12—Powdering or granulating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/02—Homopolymers or copolymers of acids; Metal or ammonium salts thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2333/02—Homopolymers or copolymers of acids; Metal or ammonium salts thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Materials Engineering (AREA)
- Hematology (AREA)
- Public Health (AREA)
- Dispersion Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Absorbent Articles And Supports Therefor (AREA)
Abstract
The present invention relates to a process for producing improved water-absorbent resin particles comprising the step of treating water-absorbent resin particles, which are crosslinked polymers of ethylenically unsaturated monomers comprising acrylic acid and/or acrylic acid salt as an essential element, with a modified silicone oil having a functional group which can react with a carboxyl group and/or a carboxylate group in the molecule. Improved water-absorbent resin particles obtained by the process have a hygroscopic blocking rate of 20 % or less under a relative humidity of 80 % at 40 DEG C, a dust level of 10 CPM or less and an absorbing characteristic of initial absorbency under load to physiological saline of 20 times or more. The present invention provides water-absorbent resin particles which have an improved hygroscopic blocking rate under high humidity and dust generation rate with a good initial absorbency under load and absorbing capacity.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP26828394 | 1994-10-05 | ||
JP26828394 | 1994-10-05 |
Publications (3)
Publication Number | Publication Date |
---|---|
FI953233A0 FI953233A0 (en) | 1995-06-29 |
FI953233A true FI953233A (en) | 1996-04-06 |
FI119180B FI119180B (en) | 2008-08-29 |
Family
ID=17456393
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FI953233A FI119180B (en) | 1994-10-05 | 1995-06-29 | Water absorbing resin particles and their preparation |
Country Status (6)
Country | Link |
---|---|
US (1) | US5668078A (en) |
EP (1) | EP0705643B1 (en) |
AT (1) | ATE187899T1 (en) |
DE (1) | DE69514064T2 (en) |
ES (1) | ES2140584T3 (en) |
FI (1) | FI119180B (en) |
Families Citing this family (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19716657A1 (en) * | 1997-04-21 | 1998-10-22 | Stockhausen Chem Fab Gmbh | Super absorber with controlled absorption speed |
US6124391A (en) * | 1998-08-18 | 2000-09-26 | Stockhausen Gmbh & Co. Kg | Superabsorbent polymers having anti-caking characteristics |
EP1072630B1 (en) | 1999-07-26 | 2004-12-01 | Nippon Shokubai Co., Ltd. | Water-absorbing composition and its use |
US7732050B2 (en) * | 2001-05-16 | 2010-06-08 | Kao Corporation | Silicone-modified water-absorbing polymer particles and method for producing the same |
US20040194664A1 (en) | 2002-08-05 | 2004-10-07 | Elementis Pigments, Inc. | Low sulfur red iron oxide useful as a catalyst or catalyst component and a process for making low sulfur red iron oxide |
WO2004069404A1 (en) * | 2003-02-10 | 2004-08-19 | Nippon Shokubai Co., Ltd. | Particulate water absorbent containing water absorbent resin as a main component |
WO2005014697A1 (en) | 2003-08-06 | 2005-02-17 | The Procter & Gamble Company | Coated water-swellable material |
US7427437B2 (en) | 2003-08-06 | 2008-09-23 | The Procter & Gamble Company | Absorbent article comprising coated water-swellable polymer |
EP1654012B1 (en) | 2003-08-06 | 2013-04-24 | Basf Se | Water-swellable material comprising coated water-swellable polymer particles |
EP1518567B1 (en) | 2003-09-25 | 2017-06-28 | The Procter & Gamble Company | Absorbent articles comprising fluid acquisition zones with coated superabsorbent particles |
WO2005042042A1 (en) * | 2003-10-31 | 2005-05-12 | Basf Aktiengesellschaft | Blood- and/or body fluid-absorbing polymer particles |
WO2005092955A1 (en) * | 2004-03-29 | 2005-10-06 | Nippon Shokubai Co., Ltd. | Particulate water absorbing agent with irregularly pulverized shape |
JP2008538121A (en) * | 2005-02-04 | 2008-10-09 | ビーエーエスエフ ソシエタス・ヨーロピア | Water-absorbing material having an elastic film-forming polymer coating |
WO2006097389A2 (en) * | 2005-02-04 | 2006-09-21 | Basf Aktiengesellschaft | A process for producing a water-absorbing material having a coating of elastic filmforming polymers |
US20080124551A1 (en) * | 2005-02-04 | 2008-05-29 | Basf Aktiengesellschaft | Process For Producing a Water-Absorbing Material Having a Coating of Elastic Filmforming Polymers |
JP2008538375A (en) * | 2005-02-04 | 2008-10-23 | ビーエーエスエフ ソシエタス・ヨーロピア | Water swellable material |
CA2596870A1 (en) * | 2005-02-04 | 2006-08-10 | The Procter & Gamble Company | Absorbent structure with improved water-absorbing material |
TWI344469B (en) | 2005-04-07 | 2011-07-01 | Nippon Catalytic Chem Ind | Polyacrylic acid (salt) water-absorbent resin, production process thereof, and acrylic acid used in polymerization for production of water-absorbent resin |
TWI383008B (en) * | 2005-08-17 | 2013-01-21 | Nippon Catalytic Chem Ind | Production method of water-absorbent resin, water-absorbent resin, and usage of water-absorbent resin |
TWI394789B (en) | 2005-12-22 | 2013-05-01 | Nippon Catalytic Chem Ind | Water-absorbent resin composition, method of manufacturing the same, and absorbent article |
EP1837348B9 (en) | 2006-03-24 | 2020-01-08 | Nippon Shokubai Co.,Ltd. | Water-absorbing resin and method for manufacturing the same |
JP5301159B2 (en) | 2006-03-27 | 2013-09-25 | 株式会社日本触媒 | Water-absorbing agent, water-absorbing body using the same, and method for producing water-absorbing agent |
CN101678315B (en) * | 2007-03-05 | 2014-11-12 | 株式会社日本触媒 | Water absorbent and process for producing the same |
WO2011040472A1 (en) | 2009-09-29 | 2011-04-07 | 株式会社日本触媒 | Particulate water absorbent and process for production thereof |
KR20130009783A (en) * | 2010-02-18 | 2013-01-23 | 다우 코닝 코포레이션 | Siloxane surface-modified hydrogel and hydrogel microparticle compositions |
KR101825607B1 (en) | 2010-02-18 | 2018-02-05 | 다우 코닝 코포레이션 | Surface-modified hydrogels and hydrogel microparticles |
US8329255B2 (en) * | 2010-11-05 | 2012-12-11 | Momentive Performance Materials Inc. | Durable non-fluorine water repellent agent and process for preparing same |
JP6004729B2 (en) | 2012-04-26 | 2016-10-12 | 株式会社リブドゥコーポレーション | Absorbent articles |
WO2014034667A1 (en) | 2012-08-27 | 2014-03-06 | 株式会社日本触媒 | Particulate water-absorbing agent and process for producing same |
JP6128791B2 (en) | 2012-10-15 | 2017-05-17 | 株式会社リブドゥコーポレーション | Absorbent articles |
JP6128790B2 (en) | 2012-10-15 | 2017-05-17 | 株式会社リブドゥコーポレーション | Absorbent articles |
CN103866642B (en) * | 2014-02-28 | 2016-03-09 | 苏州恒康新材料有限公司 | A kind of paper softener and preparation method thereof |
CN106132534B (en) | 2014-03-31 | 2020-06-19 | 株式会社日本触媒 | Particulate water-absorbing agent and method for producing same |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56133028A (en) * | 1980-03-25 | 1981-10-17 | Nippon Shokubai Kagaku Kogyo Co Ltd | Composition of water absorbent |
JPS5761775A (en) * | 1980-09-30 | 1982-04-14 | Kanebo Ltd | Treatment of porous acrylic fiber |
JPS5980459A (en) * | 1982-10-29 | 1984-05-09 | Arakawa Chem Ind Co Ltd | Water-absorbing powdery resin composition |
JPS6169854A (en) * | 1984-09-14 | 1986-04-10 | Lion Corp | Water-absorbing resin composition |
DE3682088D1 (en) * | 1985-03-18 | 1991-11-28 | Mitsubishi Petrochemical Co | METHOD FOR PRODUCING WATER-ABSORBING POLYMERS. |
JPH0617395B2 (en) * | 1985-05-16 | 1994-03-09 | 三菱油化株式会社 | Method for producing super absorbent polymer |
JPS6328977A (en) * | 1986-07-22 | 1988-02-06 | 旭化成株式会社 | Water absorbable fiber |
JPS63105064A (en) * | 1986-10-22 | 1988-05-10 | Nippon Synthetic Chem Ind Co Ltd:The | Resin composition having high water absorption property |
JPS63108031A (en) * | 1986-10-23 | 1988-05-12 | Shinto Paint Co Ltd | Production of thermoplastic resin microparticle |
JP2831648B2 (en) * | 1988-03-31 | 1998-12-02 | 住友精化株式会社 | Water-absorbing water retention material |
DE3928858A1 (en) * | 1989-08-31 | 1991-03-07 | Beiersdorf Ag | NETWORKED HYDROGELES AND METHOD FOR THE PRODUCTION THEREOF |
JP3077294B2 (en) * | 1991-09-12 | 2000-08-14 | 三菱化学株式会社 | Water-absorbing resin composition and absorbent article using the same |
CA2086031A1 (en) | 1992-01-28 | 1993-07-29 | Shigeki Ueda | Process for producing improved water absorbing resin and resin made by the same |
JP3244550B2 (en) | 1992-12-02 | 2002-01-07 | 積水化学工業株式会社 | Bus unit |
-
1995
- 1995-06-07 US US08/476,718 patent/US5668078A/en not_active Expired - Lifetime
- 1995-06-29 FI FI953233A patent/FI119180B/en not_active IP Right Cessation
- 1995-07-13 DE DE69514064T patent/DE69514064T2/en not_active Expired - Lifetime
- 1995-07-13 AT AT95111005T patent/ATE187899T1/en not_active IP Right Cessation
- 1995-07-13 EP EP95111005A patent/EP0705643B1/en not_active Expired - Lifetime
- 1995-07-13 ES ES95111005T patent/ES2140584T3/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FI953233A0 (en) | 1995-06-29 |
ATE187899T1 (en) | 2000-01-15 |
EP0705643B1 (en) | 1999-12-22 |
EP0705643A1 (en) | 1996-04-10 |
ES2140584T3 (en) | 2000-03-01 |
FI119180B (en) | 2008-08-29 |
DE69514064D1 (en) | 2000-01-27 |
DE69514064T2 (en) | 2000-08-24 |
US5668078A (en) | 1997-09-16 |
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